Department of Social Security, School of Public Administration, Hebei University of Economics and Business, Shijiazhuang, China.
Hebei Collaborative Innovation Center on Urban-rural Integrated Development, Shijiazhuang, China.
BMC Geriatr. 2022 Oct 28;22(1):829. doi: 10.1186/s12877-022-03542-1.
This study explored the association between oral health and depression occurs via daily dietary satisfaction as a mediator, and that body mass index could moderate the path between daily dietary satisfaction and depression.
Data for this research were derived from a community survey adopting quota sampling in the cities of Tianjin and Shijiazhuang in mainland China in 2020 (N = 781). The moderated mediation model was tested by using bootstrapping with resampling strategies, and the Johnson-Neyman technique was used to visualize the moderating effect of body mass index.
A significant negative association between oral health and depression has been indicated (B = -0.22, SE = 0.11, 95%CI [- 0.44, - 0.01]), and dietary satisfaction partially mediated the relationship between oral health and depression (B = -0.04, SE = 0.02, 95%CI [- 0.09, - 0.002]). The path was moderated by body mass index, and the effect of dietary satisfaction on depression was much greater in people with relatively low body mass index.
This study present evidence for policymakers and researchers that strategies to enhance oral health and daily dietary satisfaction could be important for preventing depression in Chinese older adults, and especially for the relatively fitter older groups with lower body mass index.
本研究通过每日饮食满意度这一中介变量，探讨了口腔健康与抑郁之间的关系，并且身体质量指数可能会调节每日饮食满意度和抑郁之间的关系。
本研究的数据来源于 2020 年在中国天津和石家庄采用配额抽样的社区调查（N=781）。采用 bootstrap 与重抽样策略检验了中介调节模型，并使用 Johnson-Neyman 技术可视化了身体质量指数的调节作用。
口腔健康与抑郁之间存在显著的负相关（B=-0.22，SE=0.11，95%置信区间[-0.44，-0.01]），饮食满意度部分中介了口腔健康与抑郁之间的关系（B=-0.04，SE=0.02，95%置信区间[-0.09，-0.002]）。该路径受到身体质量指数的调节，对于身体质量指数相对较低的人群，饮食满意度对抑郁的影响更大。
本研究为政策制定者和研究人员提供了证据，表明增强口腔健康和每日饮食满意度的策略可能对预防中国老年人的抑郁很重要，特别是对身体质量指数较低的相对健康的老年人群体。
